13=5+3a-13

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Solution for 13=5+3a-13 equation:


13=5+3a-13

We simplify the equation to the form, which is simple to understand 
13=5+3a-13

We move all terms containing a to the left and all other terms to the right. 
-3a=+5-13-13

We simplify left and right side of the equation. 
-3a=-21

We divide both sides of the equation by -03 to get a. 
a=7

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